392 Mr. E. E. Austen on Specimens of the Genus 



rather less than the anterior half of all the visible segments 

 (the '' cap " is wanting in the two specimens from which this 

 description is taken) surrounded by a zone of small, sharp, 

 backwardly directed spines, the largest of which are about 

 1 millim. in length ; a narrow and less conspicuous ring of 

 smaller spines surrounds the posterior margins of the segments; 

 the rest of the surface covered with small, distinct, bluntly 

 conical tubercles, not scales; the three lateral rows of pro- 

 tuberances exhibited by the pupa-case of Cutiterehra but very 

 faintly indicated, and that only upon segments anterior to the 

 seventh; posterior stigmata reniform. 



The absence of transverse ridges upon the posterior region 

 of the segments and the fact that the surface is covered with 

 tubercles and spines * instead of with imbricated scales at 

 once distinguish the pupa-case of Bogeria from that of 

 Cutiterehra. The previous stages of Rogenhofera trigonophora, 

 Brauer (' Monographic,' &c. pp. 217-218), the type of its 

 genus, are unknown ; but, according to Berg's description 

 (Stett. ent. Z., Jahrg. xxxvii. 1876, pp. 271-272) of the larva 

 of Rogenhofera {Gejjhenomyia) grandis, Gu^r., the only other 

 species that has as yet been assigned to Rogenhofera^ the pupa- 

 case in that genus also is covered with scales. 



Bogeria can be inserted in Prof. Brauer's tables {vide 

 ' Monographic der Oestriden,' p. 45, and Wien. ent. Z., 

 Jahrg. vi. 1887, p. 15) as follows :— 



CEstridae. 



CUTITEREBEIN^. 



I. Arista feathered above. 



a. Tarsi broad, flattened Cutiterehra, Clk. 



b. Tarsi slender Dermatobia, Brauer. 



II. Arista bare. 



a. Antennary pit large ; third joint of 

 the antennae short, round, not 

 longer than the second ; arista 



• The spiny larva described by Coquerel and Salle (Ann. Soc. Ent. Fr. 

 iv. s6r. t. 2, 4ifenie trim., 1863, p. 785, pi. xix. fig. 2) ixova Lepus palustris, 

 Bachm., from Mexico, and assigned by the authors to an undetermined 

 species of Cutiterehra, may possibly belong to this genus. In this case, 

 however, the spines are apparently not arranged in definite zones, and, 

 judging from the enlarged figure (pi. xix. fig. 2 h), they are shorter and 

 broader than in Bogeria. The fact that some of them are bifid at the tip 

 may be due to their being broken. Townsend (' Psyche,' vol. vi. 1892, 

 pp. 299- 300) describes a spiny larva, assigned by him to Dermatohia, sp., 

 from Lepus callotis, Wagler, from New Mexico ; but neither in this case 

 are the spines arranged in zones. Townsend writes : — "■ Segments after 

 the first sparsely covered with short, black, curved spines. . . ." 



