578 SCIENTIFIC RECORD FOR 1882. 



tlie higher or the lower animals j the species being propagated by the 

 production of immense numbers of ova, whose development is more or 

 less complicated." This group includes most of the nematoids and is 

 exemplified by the Ascarides, Filarise, etc. The groups proposed by 

 Schneider — Polymyarii, Meromyarii, and Holomyarii — are adopted for 

 its constituent genera. 



2. The Ehabditiformes are "small, chiefly microscopic thread- worms, 

 which live generally free, but in exceptional cases as parasites, and have 

 without exception the power of developing to the sexually mature state 

 in organic substances in a state of decomposition, or in earth saturated 

 with such substances, such condition being necessary to the process." 

 Only two species were represented in the British Museum. 



3. The AnguillulidsB are ''small microscopic thread-worms leading a 

 free existence in mould or in water throughout all their stages, devel- 

 oping without a complete metamorphosis." The common Vinegar eel 

 is the type. 



ANNELIDS. 

 1. GENERAL. 



Kleinenberg (N.). De 1' origine dusystfeme nerveux central dee Ann^lides. Arcli. Ital. 



Biol., t. 1, p. 63-77. 

 Verrill (A. E.). New England Annelida. Parti. Historical Sketch, with annotated 



lists of the species hitherto recorded. Trans. Conn. Acad. Arts. & Sc, v. 4, p. 



285-324, 324 a— e., pi. 3-12. 



2. SPECIAL ORDERS. 



Folychceta. 



Giard (Alfred). Sur un type synthetique d'Anndllide (Anoplonereis Hermanni) com- 

 mensal des Balanoglossus. Compt. rendus Acad. Sc. Paris, t. 95, p. 389-391. 



Haswell (Will. A.). On the Structure and Functions of the Elytra of the Aphrodi- 

 tacean Annelids. Ann. & Mag., Nat. Hist., (5,) v. 10, p. 238-242. 



Kennel (J.). Ueber Ctenodrilus pardalis Clap. Ein Beitragzur Kenntnis der Anato- 

 mie und Knospung der Anneliden. Mit 1 Taf. Arb. Zool.-zoot. Instit. Wiirz- 

 burg. Bd. 5, p. 273-429. 



Wilson (Edmund B.). Observations on the Early Developmental Stages of some 

 Polychietous Annolides. With 4 pi. Stud. Biolog. Laborat. Johns Hopkins Uui- 

 vers., V. 2, p. 271-300. 



Powell (Thomas). Remarks on the Structure and Habits of the Coral-reef Annelid 

 Palolo viridis. Journ. Linn. Soc. London, Zool., v. 16, p. 393-396. 



A periodical worm. 



One of those forms whose movements coincide with the phases of the 

 moon once every year at least, appears to be established as the Palolo 

 or Mbalolo of certain of the coral archipelagoes of the Pacific — Samoa, 

 Viti, and the Gilbert group. The Palolo is an annelid related to the 

 Nereids, and its binominal designation is Palolo viridis. It was first 

 scientifically described by Dr. J. D. Macdonald in 1857 (Trans. Linn. 

 Soc, London, V. 22, pp. 237-239, pi. 41). The Fijian name has ref- 



