Famity—TENTHREDINIDZ. 111 
nitidis, costa obscure lutea, stigmate nigro; basi presertim posticarum sublimpidis ; pedibus piceo-nigris, anticis 
magis piceis; femorum tibiarumque pedum posticorum apicibus calcaribusque rufo-piceis (mas.) 
Long. corp. lin. 8.; expans. alar. antic. lin. 15}. 
Habitat; America Septentrionalis, arboribus terebenthinis (Raddon). In Mus. Hopeiano Oxonie (olim 
nostr.) 
The mandibles are fulvous, with the tips brown; the palpi are brown, with the base fulvescent; the 
spongiose under surface of the tarsi is lutescent. 
This species is very closely allied to Lyda plagiata— Lyda plagiata, atra capite (verticis medio excepto), 
pedibus abdominisque dorso luteis *_Klug (Berlin Mag. 1808, p. 278, tab. VII, fig. 6; Latreille, Ene. Méth. 
viii, Pamphilius, No. 6; St. Farg. Mon. Tenthr. p. 5), from Baltimore, in North Fvmmenilg but is sufficiently 
distinct in having the Axons not testaceous at the base above, and in the legs being black, not luteous. 
Klug’s unique specimen was, however, a female. 
Tam unable to state the precise locality in North America of this species; a great number of specimens of 
it were, however, obtained by the late Mr. Raddon from the skimmings of barrels of turpentine imported into 
London. It is a curious circumstance that all the specimens thus obtained were males. 
It and the following insect differ from all the hitherto described North American species of the Genus. 
LYDA APICALIS. Westw. 
Piatt XX, Fig. 8. 
Luteo-fulva punctata, nigro variegata, alis melleo-fulvis: capite fulvo, vertice plaga magna trifida supra 
clypeum transversim conjuncta, punctis duobus pone oculos margineque postico nigris ; mesonoto nigro, fulvo 
variegato, tegulis fulvis; abdominis segmentis quatuor basalibus luteo-fulvis; duobus anticis macula majori 
mediana, tertio et quarto fascia transversa tenui basali in medio interrupta, segmentis reliquis abdominalibus 
nigris lateribus irregulariter luteis; antennis longis, gracillimis 38-articulatis, fulvis, articulo basali crassiori 
macula media nigra, apicibus fuscescentibus ; pedibus luteo-fulvis, femoribus supra nigris, posticis obscurioribus ; 
alarum anticarum stigmate brunneo-fulvo (mas.) 
Long. corp. lin. 10; expans. alar. antic. lin. 17. 
Habitat; America Septentrionalis arboribus terebinthinis (Raddon). Plures mares tantum vidi. In Mus. 
Hopeiano Oxonie (olim nostr.) 
The clypeus and mandibles are buff coloured, the latter with the tips black, the remaining parts of the 
mouth are buff. 
This species is very nearly allied to Lyda tessellata Klug, from Georgia, United States of America 
(Berlin Mag. 1808, p. 276, tab. VII, fig. 4; St. Fargeau, Mon. Tenthr. p. 10 (?); Latreille, Ene. Méth. vii. 
No. 7); but the abdomen is described as ‘ferrugineum, segmentis 2 primis nigris, and the wings as hyaline. 
Dr. Klug’s unique specimen was a female, 
Grnus—CEPHUS. 
CEPHUS 4-GUTTATUS. Westw. 
Prats XX, Fie. 11. 
Niger nitidus, mesonoto punctato, metanoto bicarinato: abdominis segmentis quatuor basalibus pedibusque 
fulvo-testaceis ; alis hyalinis, anticis stigmate punctisque duobus apicalibus nigricantibus. 
Long. corp. lin. 43; expans. alar. antic. lin. 83. 
Habitat ; Massachusetts (Drake). In Mus. Hopeiano Oxoni, e Mus, Kirbu. 
The head is convex and glossy, with a sinuated transverse ridge above the antenne ; the labrum is short, 
triangular, and deeply emarginate in the middle of the fore margin (fig 11); the mandibles are tridentate, 
the upper tooth being much larger than the others (fig. 114); the maxille have two large flat membranaceous 
lobes (fig. 11 ¢); the maxillary palpi are six jointed, the joints very irregular, the fifth bemg very short and 
oblique, the sixth affixed close to the base of the preceding (fig. 112); the labial palpi (fig. 11 e) are 4-jointed, 
