AMERICAN MUTH>LID^. 233 



Head, tlionvx anil second dorsal sejinient clothed witJi a orlittering, appressed. 

 s])arse, golden pubescence, the second dorsal rugosely punctured at 

 base, its apical silvery band divided into three parts; head more quad- 

 rate than in the allied species, tending somewhat to that of the texana, 

 scseuola, etc., section spars» n. sp. 



26. Legs black or piceous; entire insect clothed more or less with an erect, pale 



pubescence; head with a close, confluent, coarse punctuation. 



vesta Cress. 



Legs red ; insect with .scarcely any erect pubescence, except in certain places ; 



head with a strong, separated punctuation SRpplio n. sp. 



27. First segment with the basal productions dentate; punctuation not unusually 



coarse 28. 



First segment with the basal productions lamellar; punctuation unusually 

 coarse, the thorax and second segment deeply pitted ; head and thorax 

 black ; abdomen castaneous, pertaining to yellowish on second seg- 

 ment Ulkei Cress. 



28. Postero-lateral angles of head unarmed 29. 



Postero-lateral angles of head carinate (reddish; legs black; second dorsal 



with two pale yellowish spots). ... cariniceps n. sp. 



29. Head and thorax black or rufo-piceous, legs darker; second segment red. 



with appressed, orange pubescence above; apical segments dorsally 

 with long black hairs, and fringed above and beneath, more or less, 

 with pale pubescence lexaiia Blake. 



Insect ferruginous 3q 



30 Coarsely sculjttu red throughout, sparsely clothed with long, pale hairs; leg- 

 spines very robust, as well as the legs themselves; first segment 

 prominently nodose, with a silvery spot at apex; second segment 

 usually with paler spots sceevola Blake. 



Sculptured as usual, about as in ferrugata, vesta, etc., scarcely clothed with 

 pale hairs ; legs slender, the spines delicate in comparison to scievola ; 

 first segment more as in ferrugata. etc., not maculate ; second segment 

 unicolored ; dorsals 2 at apex, and 3-5 medially, with a silvery spot. 



Bollii n. sp. 



31. Head at most as wide as thorax, usually not as wide 32. 



Head wider than thorax 41 



32. Pubescence whitish 33 



Pubescence colored otherwise 34. 



33. Pubescence above long and white, beneath and on legs black, ground color 



black or piceous cly teninestra n. sp. 



Pubescence of entire body, including that of legs, long and white, ground 

 color reddish thetis Blake. 



34. Body clothed with a close, api)ressed, shoj-t pubescence, and some much 



sparser, erect hairs (in one species wanting) ,35. 



Body clothed with coarse, long and matted, or .semi-erect pubescence 38. 



.3."). Pubescence of thorax above and second dorsal segment colored the same. .36. 

 Pubescence of head and thorax above grayish white, the thorax anteriorly and 

 posteriorly with a black triangular patch of black pubescence; second 

 dorsal with scarlet pubescence; the erect pubescence of upper portion 

 of insect black, otherwi.se inclusive of legs, whitisli ; apical segments, 

 with pale pubescence, except the apex of second dorsal and the third 

 (except at .sides of both), which have black pubescence. 



Dugesii Ckll. and ('as. 



TRANS. .\M. KNT. SOC. XXV. (30) JANUARY, 1899. 



