198 MESSRS. BRUNNER AND REDTENBACHER ON [Mar. 15, 



rule greatest, it may be that the restricted range is in their case 

 specially unfavourable. The genus Schistocerca includes two of the 

 six species of St.-Vincent Acridiodea ; and this genus is remarkable 

 as comprising one of the few migratory locusts that at times devastate 

 regions of the Old World ; the genus is, however, specially an 

 American one and it is supposed that the S. peregrina, 01. — the 

 migratory locust I am speaking of — is an American insect that 

 made its way to Africa. It is worthy of note that it is not this 

 Schistocerca with great powers of flight and self-distribution that 

 is found in St. Vincent, but two other species, one of which has a 

 wide distribution in the Antilles and in the continental lands 

 adjacent, while the other has been hitherto only found in Cuba, 

 Haiti, and Jamaica, so that both are endemic species of the region 

 in which St. Vincent is situated. 



The Orthopterous fauna of St. Vincent appears to point out that 

 it is not powers of locomotion that have established certain species 

 in the island and excluded others, for the earwigs, which are 

 remarkable from their very feeble powers of flight, are proportionally 

 better represented in the fauna than the Acridiodea, whose powers 

 of locomotion are notoriously great. Of the nineteen species 

 appearing at present peculiar to the island eleven are apterous, and 

 only eight winged species. It must not, however, be taken for 

 granted that these nineteen species will ultimately prove to be abso- 

 lutely limited to the island of St. Vincent. We may indeed feel pretty 

 sure that some of them will be found in the neighbouring islands, 

 and until these have been explored it would be premature to attach 

 much importance to the fact that the majority of the species peculiar 

 to the island are incapable of flight. It should also be remarked 

 iu reference to these nineteen species that most of ihem appear to 

 be extremely rare, indeed in the case of seven of them only a single 

 specimen of each has been obtained. 



The most remarkable of these Orthoptera is Biapherodes gigas, 

 the female of which is a gigantic apterous insect, 7 or 8 inches in 

 length. Another of the most interesting of the Orthoptera of the 

 island is the Cyrtophyllus crepitans ; this is one of the singing 

 Locustidae, allied to the N. American " Katydids," and is provided 

 with a powerful musical apparatus. The most abundant Orthopteron 

 appears to be Orphula punctata ; this is a comparatively small 

 insect, extremely similar to the Stenobothri that are so numerous in 

 our European fields and commons ; it has, however, no stridulating 

 organ. The common earwig of the island appears to be Anisolabis 

 janeirensis. 



(D. S.) 



