94 Kev. T. A. Marshall's monocjraph of 



Abdomen hardly narrowed at the base, segments 1 — 4 margined at 

 the sides underneath ; segment 1 rather longer than its apical 

 breadth ; 2 transverse ; 4 and the following piinctato-rugulose, not 

 shining. Abdomen of the $ subcompressed at the apex ; terebra 

 subexserted. Wings nearly hyaline ; 2d cubital areolet slightly 

 transverse, a little shorter than the podiscoidal ; stigma fuscous, 

 with a pale spot at the inner angle. 



Antennae about as long as the body, 48 — 52-jointed, often brownish 

 beneath. Mandibles and palpi varying from fuscous to testaceous. 

 Vertex moderately narrowed behind the eyes. 



Var. a. Abdominal segments 1 — 3 black, with rufous margms. 

 {Ef. signatus and annulipes). 



Var. /3. Abdomen black, disk of the 2d segment rufous ; coxae 

 black. 



Var. y. Eufous ; head, scutellum, metathorax, and abdomen at 

 the apex, black. {R. alternator and balteatics). 



Var. 8. Pro- and metathorax rufous, variegated with black 

 above ; mesothoracic sutures, abdominal segments 1 — 3, and base 

 of 4, rufous. 



Var. E. Rufo-testaceous ; vertex, pectus, and metathorax above, 

 varied with black. 



Described in the Ent. Mag., iv., 99, from specimens 

 taken by Walker in Jersey and England. The var. 

 halteatus was found by Haliday near the harbour of 

 Donaghadee. Frausen at Eotterdam, according to 

 S. V. Vollenhoven, and Bignell, near Plymouth, have 

 bred males and females from young larvae of Odonestis 

 2Jotatoria, L., found in the spring; the transformations 

 taking place within the dried skin of the victim. Infested 

 larvae of this moth may be found in April and May, 

 resting on various grasses, and apparently prepared to 

 moult for the fourth time. Instead of moulting, they 

 gradually contract and perish, retaining the same posi- 

 tion. The Rhogas escaped through a perforation, in one 

 case, of the 9th and 10th segments. Bred by Brischke, 

 June Both, from Hedi/a ocellana, Hiib. ; July 6th, from 

 Orgyia gonostigma, Fab. ; also from 0. antiqua, L., 

 Dasijchira sel&nitica, Esp., and an undetermined Tortrix. 

 According to Giraud, bred by Ferris from TriphcBna 

 fimbria, L. ; and, according to Eeinhard, from Arctia 

 caia, L., Porthesia, &c. 



