SCOTT— COLEOPTERA, LAMELLICORNIA AND ADEPHAGA 249 



DiORYCHE MacLeay, Annul, jav., 1825, p. 21. 



35. Dioryche interpunctata (Dejean). 



Platymetopus interpunctatus Dejean, Spec. Col., iv. 1829, p. 71. 



Dioryche interpunctata Alluaud, Liste CoMopt., p. 35 ; Kolbe, Abh. Senckenb. Ges., 

 xxvi. 1902, p. 572. 



8 ^, 8 ?. I have made an examination of the tvings in 5 ^ and 5 ?, removing and 

 mounting these organs. In the material thus examined there are two distinct forms, one 

 in which the wings are considerably longer than the elytra, the other in which they are 

 about the same length, or only very slightly longer than, the elytra. The smaller form of 

 wing is also proportionately reduced in breadth : it appears to be in most respects a repro- 

 duction of the larger form on a smaller scale*. This dimorphism seems independent of 

 sex or locality ; large-winged and small-winged forms occur in both sexes ; and in the case 

 of Aldabra, both forms have been obtained in the same island. I can see no external 

 difference in the specimens corresponding to the difference in the wings. In the large- 

 winged forms (2 $ from Coetivy, 1 $ and 1 ? from Aldabra), the length of the elytra 

 varies from 4^ — 5 mm., that of the wings from 6:^ — 7 mm. : in the small-winged forms 

 (2 $ and 1 $ from Cosmoledo, 3 ^ from Aldabra) the measurements are, elytra 4^ — 5 mm., 

 wings 4f — 5^ mm. 



Loc. Aldabra: 1908 — 9, 3 specimens (Fryer); 1907, 8 specimens (Thomasset) ; 

 previously obtained by Voeltzkow in 1895. Cosmoledo: 1907, 3 specimens (Thomasset). 

 Coetivy : 1905, 2 specimens. Madagascar, Mascarene Islands, Africa (Senegal, according 

 to AUuaud's " Liste "), India (Coromandel). 



Stenolophus Dejean, Spec. Col., iv. 1829, p. 405. 



36. Stenolophus fulvipes, Erichson. 



Stenolophus fulvipes Erichson, Arch. Naturg., ix. 1843, i. p. 216 ; Kolbe, Mitt. Zool. 

 Mus. Berlin, v. 1910, p. 18. 



Anisodactylus hasicollis Fairmaire, Ann. Soc. ent. France, 1892, Bulletin, p. cli ; 

 Alluaud, Liste Col^opt., p. 35 ; Kolbe, op. cit. p. 17. 



7 specimens, agreeing so closely with Fairmaire's description of A. hasicollis that I 

 have very little doubt they are the same, though I have seen no named specimen of that 

 species. As, however, the nature of the mouth-parts made it clear that the species is not 

 an Anisodactylus, I sent specimens to Professor Kolbe ; he has compared them with the 

 type of S. fidvipes Erichson, and has informed me that they belong to that species. The 

 name Anisodactylus hasicollis must therefore become a synonym of Stenolophus fidvipes. 

 I have examined the wings of the two specimens from Mah^, and find them to be about 

 8 mm., while the elytra are about 4 mm., long. 



* It appears tliat the neivuration of tlie .small form of wing i.s complete, and that all parts are present 

 though reduced in size. In many flightless Hawaiian Carabidaj, on the contrary, the nervuration is very much 

 reduced and the apical portion of the wing is absent; see Sharp, Fauna Hawaiieiisis, vol. iii. pt. in., 

 p. 179 sqq. 



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