MORGAN HEBARD 



^DO 



CRYPTOCERCUS Scudder 

 1862. Cryplocerciis Scudder, Bost. Journ. Xat. Hist., vii, p. 419. 



Two species of the present genus have been described."^ 

 Genotype, by monotypy: C[ryptocercus\ punctidatus Scudder. 

 Description of Genus. — Eyes very decidedly reduced, small and 

 convex, roundly trigonal, situated dorso-laterad of the antennal 

 sockets and very little larger than these; no trace of ocellar spots. 

 Pronotum convex, except for a wide and deep medio-longitudinal 

 depression, which begins near the caudal margin and extends to a 

 broad, concave, transverse area near the cephalic margin, which 

 margin is broad and raised above the head in a brief hood; meso- 

 laterad of the median depression, its sides are raised in weakly 

 developed, roughened projections. Tegmina and wings absent. 

 Limbs heavy. Sixth dorsal^^'^ and ventral abdominal segments 

 produced, completely enveloping the genitalia. Cephalic femora 

 with ventro-cephalic margin unarmed, except at distal extremity, 

 where three, ^" short, stout, equal spines, directed nearly per- 

 pendicular to the margin, occur: the ventro-caudal margins of all 

 the femora are (normally) armed each with two similar spines, 

 otherwise all of the ventral femoral margins are smooth. The 

 femora entirely lack dorsal genicular spines. Tarsi short and 

 stout, first four joints each supplied distad with a large rounded 

 pulvillus, these pulvilli extending half the distance to the base of 

 each of the three short joints succeeding the metatarsus. Tarsal 

 claws heavy, arolia absent. 



Cryptocercus punctulatus Scudder (Plate X, figures 13 to 16.) 

 1862. C[ryptocercus\ punctulatus Scudder, Bost. Journ. Nat. Hist., vii, p. 420. 

 [ [nearly adult] cf Draper's \'alley. \'irginia; 9 New York; 9 Pennsylvania.] 

 We here select as type, the nearly adult male from Draper's 

 \'allcy, \'irginia. 



3^= The second species is Cryptocercus spadicus Shiraki, described from Gifu, Japan, in 

 1906 (Annot. Zool. Jap., vi, p. t,2, pi. ii, fig. 2). The description and figure afford no 

 specific diagnostic characters. The measurements show the type to be either immature 

 or a much smaller species than punctulatus. 



336 This segment is given as the seventh by Scudder, who considered the median seg- 

 ment to be the first dorsal abdominal segment. 



^'" Rarely but two spines are found in this position, while in one example before us 

 only a single spine is found there. 



MEM. AM. ENT. SOC, 2. 



