372 HEMIPTERA-HETEROPTERA. 
6. Pronotum almost unimpressed in both sexes. 
c’. Pronotum and scutellum nigro-violaceous, the anterior angles of the 
former broadly white; legs stout: length 7-72 mm. . . . . . . . crassipes, n. sp. 
da’. Pronotum and scutellum pale; legs slender: length 53-64 mm. . . . pallens, n. sp. 
1. Anisops carinatus, n. sp. (Tab. XXII. figg. 12, 12, , .) 
? Anisops platycnemis, Uhler, in Kingsley’s Stand. Nat. Hist. ii. p. 253 (nec Fieb.) *. 
Elongate, robust, smooth, shining; head and pronotum sordid white, the colour of the latter modified by that 
of the mesonotum showing through; the scutellum usually black in front and rufo-testaceous or 
testaceous behind, sometimes entirely pale; the elytra sordid white, the colour modified by that of the 
metanotum and the apex of the abdomen showing through, these parts being usually black and the rest 
ef the upper surface rufo-testaceous or testaceous ; the under surface, antenne, and legs testaceous, the 
venter black, the terminal segment and some spots on the connexivum excepted, the posterior femora 
beneath, and sometimes the anterior and intermediate tibia externally, each with a dark streak down 
the middle. Head (with the large eyes) nearly as wide as the pronotum in the male, a little narrower 
in the female; interocular space not quite twice as wide on the vertex as at the base, considerably 
narrowed beneath, the vertex sulcate down the middle. Pronotum about as long as the scutellum in the 
male, slightly shorter in the female; the disc in the male with two broad elongate depressions towards 
the middle and a very large subtriangular depression on each side, these latter almost enclosing an oblique 
oval elevation behind, the spaces between the depressions appearing raised and forming three longitudinal 
ridges. Legs stout, the four anterior tibie much widened, the anterior pair in the male angularly 
dilated on the lower edge at the base beneath, and also wider than in the female. 
Length 73-9, breadth 24-2} millim. (¢ 9.) 
Hab. ? Norta America, Southern United States 1—Mexico, Presidio de Mazatlan 
(Forrer), ‘Tamaulipas (fide Uhler!), Temax in N. Yucatan (Gawmer); Britis 
Howpuras, Rio Hondo (Blancaneaur); GuateMaLa, Paso Antonio, Guatemala city 
(Champion). 
Sixteen specimens are referred to this species. It is the largest and most robust of 
the Central-American forms. The males have the head, with the large eyes, nearly 
as wide as the pronotum, the latter with four deep depressions on the disc, the spaces 
between these forming longitudinal ridges. The legs are stout, the four anterior 
tibiee broad, the anterior pair much widened in the male. This insect must be very 
nearly allied to A. macrophthalmus, Fieb., from Haiti, and A. femoralis, Fieb., from 
Puerto Rico; but without specimens from those localities before me for comparison, 
it would not be safe to identify it with either of them*. It is probable that the 
North-American and Mexican insects referred by Prof. Ubler! to A. platycnemis, 
Fieb., really belong here, as well as his Anisops sp.? from Lower California [Proc. 
Calif. Acad. Sci. (2) iv. p. 293 (1894)]. 
2. Anisops pallipes, (Tab. XXII. figg. 13, 13.4, 3.) 
Notonecta pallipes, Fabr. Syst. Rhyng. p. 103 (1808) '. 
Anisops pallipes, Stal, Hemipt. Fabr. i. p. 187°. 
* Drawings of the unique types of these species have been made for me by Fr. H. v. Zglinicka at the 
Berlin Museum : both insects have the eyes very large and contiguous behind. 
